Articles | Volume 1, issue 2
Weather Clim. Dynam., 1, 519–539, 2020
https://doi.org/10.5194/wcd-1-519-2020
Weather Clim. Dynam., 1, 519–539, 2020
https://doi.org/10.5194/wcd-1-519-2020

Research article 15 Oct 2020

Research article | 15 Oct 2020

Dominant patterns of interaction between the tropics and mid-latitudes in boreal summer: causal relationships and the role of timescales

Giorgia Di Capua et al.

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Manuscript not accepted for further review
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Short summary
We study the interactions between the tropical convective activity and the mid-latitude circulation in the Northern Hemisphere during boreal summer. We identify two circumglobal wave patterns with phase shifts corresponding to the South Asian and the western North Pacific monsoon systems at an intra-seasonal timescale. These patterns show two-way interactions in a causal framework at a weekly timescale and assess how El Niño affects these interactions.